[Editor's Note: The following is an excerpt from Inside Facebook Gold, our new data and analysis membership service tracking Facebook's business and growth. Inside Facebook Gold presents weekly in-depth analysis articles exploring the most critical developments impacting the future of the Facebook ecosystem. Click here to learn more.]

Last week, Facebook announced updates to its advertising policies designed to improve quality by more explicitly prohibiting low-quality ads. While Facebook has in general been working to improve ad quality over the past year, in addition to the formal policy changes announced last week, we’ve been hearing more from the advertiser and developer communities this week that it is also stepping up enforcement on advertisers and third party ad networks.

First, our run down of the new rules Facebook has delivered to advertisers, developers, and ad networks…

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